package com.inforich.framework.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.annotation.web.configurers.ExpressionUrlAuthorizationConfigurer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;
import com.inforich.framework.config.properties.PermitAllUrlProperties;
import com.inforich.framework.security.filter.JwtAuthenticationTokenFilter;
import com.inforich.framework.security.handle.AuthenticationEntryPointImpl;
import com.inforich.framework.security.handle.LogoutSuccessHandlerImpl;

/**
 * spring security配置
 *
 * @author hjm
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig extends WebSecurityConfigurerAdapter {

  /**
   * 自定义用户认证逻辑
   */
  @Autowired
  private UserDetailsService userDetailsService;

  /**
   * 认证失败处理类
   */
  @Autowired
  private AuthenticationEntryPointImpl unauthorizedHandler;

  /**
   * 退出处理类
   */
  @Autowired
  private LogoutSuccessHandlerImpl logoutSuccessHandler;

  /**
   * token认证过滤器
   */
  @Autowired
  private JwtAuthenticationTokenFilter authenticationTokenFilter;

  /**
   * 跨域过滤器
   */
  @Autowired
  private CorsFilter corsFilter;

  /**
   * 允许匿名访问的地址
   */
  @Autowired
  private PermitAllUrlProperties permitAllUrl;

  /**
   * 解决 无法直接注入 AuthenticationManager
   *
   * @return
   * @throws Exception
   */
  @Bean
  @Override
  public AuthenticationManager authenticationManagerBean() throws Exception {
    return super.authenticationManagerBean();
  }

  /**
   * anyRequest          |   匹配所有请求路径 access              |   SpringEl表达式结果为true时可以访问 anonymous
   *      |   匿名可以访问 denyAll             |   用户不能访问 fullyAuthenticated  |
   * 用户完全认证可以访问（非remember-me下自动登录） hasAnyAuthority     |   如果有参数，参数表示权限，则其中任何一个权限可以访问 hasAnyRole
   *      |   如果有参数，参数表示角色，则其中任何一个角色可以访问 hasAuthority        |   如果有参数，参数表示权限，则其权限可以访问 hasIpAddress
   *       |   如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问 hasRole             |   如果有参数，参数表示角色，则其角色可以访问
   * permitAll           |   用户可以任意访问 rememberMe          |   允许通过remember-me登录的用户访问 authenticated
   * |   用户登录后可访问
   */
  @Override
  protected void configure(HttpSecurity httpSecurity) throws Exception {
    // 注解标记允许匿名访问的url
    ExpressionUrlAuthorizationConfigurer<HttpSecurity>.ExpressionInterceptUrlRegistry registry = httpSecurity.authorizeRequests();
    permitAllUrl.getUrls().forEach(url -> registry.antMatchers(url).permitAll());

    httpSecurity
        // CSRF禁用，因为不使用session
        .csrf().disable()
        // 禁用HTTP响应标头
        .headers().cacheControl().disable().and()
        // 认证失败处理类
        .exceptionHandling().authenticationEntryPoint(unauthorizedHandler).and()
        // 基于token，所以不需要session
        .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).and()
        // 过滤请求
        .authorizeRequests()
        .antMatchers("/h5api/**").permitAll()
        // 对于登录login 注册register 验证码captchaImage 允许匿名访问
        .antMatchers("/login", "/register", "/captchaImage").permitAll()
        // 静态资源，可匿名访问
        .antMatchers(HttpMethod.GET, "/", "/*.html", "/**/*.html", "/**/*.css", "/**/*.js",
            "/profile/**","/h5api/profile/**").permitAll()
        .antMatchers("/swagger-ui.html", "/swagger-resources/**", "/webjars/**", "/*/api-docs",
            "/druid/**").permitAll()
        // 除上面外的所有请求全部需要鉴权认证
        .anyRequest().authenticated()
        .and()
        .headers().frameOptions().disable();
    // 添加Logout filter
    httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
    // 添加JWT filter
    httpSecurity.addFilterBefore(authenticationTokenFilter,
        UsernamePasswordAuthenticationFilter.class);
    // 添加CORS filter
    httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
    httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
  }

  /**
   * 强散列哈希加密实现
   */
  @Bean
  public BCryptPasswordEncoder bCryptPasswordEncoder() {
    return new BCryptPasswordEncoder();
  }

  /**
   * 身份认证接口
   */
  @Override
  protected void configure(AuthenticationManagerBuilder auth) throws Exception {
    auth.userDetailsService(userDetailsService).passwordEncoder(bCryptPasswordEncoder());
  }
}
